Automobile hood



vR. E. ROBINSON. AUTOMOBILE HOOD. "APPLICATION FILED sEPL-m, 1920 Patented July H, 1922.

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siren RICHARD E. ROBINSON, OF KANSAS CITY, MISSOURI.

AUTOMOBILE HOOD.

Lat-22,305.

Specification of Letters latent.

Patented Juiy ii i,

Application filed September 10, 1920. Serial No. 409,426.

To all whom it may concern:

Be it known that I, RICHARD E. Ronmson, citizen of the United States, and resident of Kansas City, county of Jackson, State of Missouri. have invented a certain new and useful Improvement in Automobile Hoods, of which the following is a complete specification.

This invention relates to motor car hoods, which as at present constructed, simply form a housing for the engine and adjacent parts of the car and an exit for the air discharged against the engine for cooling purposes by the fan. The object of my invention is to produce a hood for not only housing the parts as customary, but also for supplying cooling blasts of air to the engine when the car is in motion. A further object is to produce a hood for supplying blasts of air more particularly to the sides of the engine and in increasing volume toward the rear so that the second and tollowing cylinders shall receive a greater proportion of the air supplied through the hood than the cylinder at the front upon which the blasts of air from the cooling fan directly impinges, as in the customary arrangement the cylinders back of the front cylinder are simply swept by the air after the same has been heated more or less by impinging directly upon the front cylinder. By supplying fresh, cool air to the sides of all of the cylinders and in greatest volume to the cylinders at the rear, the engine can be more efficiently lubricated as well as cooled, that is to say, the lubricating oil will retain its viscosity for a longer period if its temperature is kept down, and thus not only preserve the engine for a longer period in good running condition but work an economy in the use of oil.

With the objects named in view, the in vention consists in providing the sides of the hood with a plurality of openings backed by a corresponding number of wings or deflectors "for driving the air as the car travels, inwardly through said openings and directly against the sides of all of the cylinders of the car; and in order that the invention may be fully understood, reference is to be had to the accompanying drawing, in which,

Figure 1 is a perspective view of a motor car hood embodying the invention,

Figure 2 is a horizontal section of the hood, taken 011 the line II-II of Figure 3.

Figure 3 is a front view of the hood.

in the said drawing, 1 indicates the two top sections of a motor car hood of common type, said sections being hinged together as at 2, and 3 indicates the sides of the hood, the sides 3 being hinged as at 4 at their upper edges to the lower edges of the top sections respectively. The hood is also provided by preference with the customary air outlet 5, and with handles 6 to facilitate the raising of the sides 3 to give access to the engine and parts adjacent thereto.

The sides are provided with openings 7, which difiier in the fact that the openings are of increasing area toward the rear of the hood.

The openings are provided at their rear edges with wings or deflectors. Three of them are shown in this instance identified by the characters 8, 9 and 10, and these wings or deflectors correspond in height with their respective openings 7 and are also of increasing width in the order enumerated, so that air passing the Wings of the first or "front openings may strike the wings of the openings next in the rear, while air passing the latter may strike the wings of the next set of openings to the rear. Each wing, therefore, receives air under an impact proportioned to the speed of the car which would not be strictly true if the wings were all of the same area, and as a result of this difference in the size of the wings and openings, all of the cylinders of the car are impinged upon by a fresh blast of air, which is of course, augmented by air which has first impinged on cylinders in front.

By reference to Figure 2, it will be seen that the action is as above described, as in said figure the engine is indicated in dotted line in substantially the correct position relative to the wings 8, 9 and 10. The air escapes from the hood in the usual manner, a great part of it escaping through exit openings 5.

With a hood of the character described, it is obvious that an engine can be elficiently cooled when the car is in motion, without cooperative action on the part of the fan, not shown. The fan, however, is essential because an engine is frequently run when the car is not in motion, and at such time, it is of course, desirable that the engine shall be subjected to a cooling blast from the fan. The eflicient cooling of the engine is not only desirable as preventing the Water circulating through the Water jacket of the engine and through the radiator from becoming too hot, but it also tends to retain the lubricating oil vin better condition to properly perform its lubricating function, and by keeping the oil in such condition, as above suggested, the supply of lubricating oil employed need not be replenished at as frequent intervals as is otherwise necessary.

From the above description, it Will be apparent that I have produced a hood embodying the features of advantage set forth as desirable in the statement of the object of the invention, but which obviously may be modified in minor particulars Without departing from the principle and scope of the appended claim.

I claim:

A motor car hood provided with openings at its sides, and Wings extending out- Ward at the rear margins of such openings, each succeeding ing increasing in length and Width in such proportion that there Will be a greater quantity of air entering each succeeding opening from the front to the rear of the hood.

In testimony whereof, I hereunto aflix my signature.

RICHARD E. ROBINSON. 

